I've never been to New York City, but I hope to visit someday. I've already picked up some of the rules of etiquette, such as to keep walking while you're on the sidewalk and don't try to start conversations with strangers.
Before I go, I'll also re-watch this helpful guide. What does it mean to ride the subway? Johnny T, one of the puppets on the Glove and Boots show, explains:
Think of the subway as going to a party at a stranger's studio apartment at 7 in the morning with 800 other people who all hate each other.
It's the worst party ever. But people go to it every day without killing each other by getting it over with as quickly and as quietly as possible.
-via Daily of the Day